Novel fin assembling and combining modular tool of external welding fin heat exchange tube

Abstract

The utility model discloses a novel fin assembly combination modular tool for an external welding fin heat exchange tube, relates to the technical field of fin heat exchange tube assembly, aims to solve the problem of low assembly efficiency in the prior art, and adopts the technical scheme that tool modules with sinking grooves matched with heat exchange fins in size are connected into a tool module; a whole round hole is formed in the center after the two tool modules are folded, one end of the guide column is connected with a pressing plate, the other end of the guide column is connected with a tip, and the guide column sleeved with a pipe body can be pressed into a pipe opening of a heat exchange fin through a hydraulic cylinder. According to the tool module, the heat exchange fins can be prevented from moving or toppling during assembly, meanwhile, the pipe bodies can rapidly penetrate into pipe openings of the heat exchange fins under the assistance of the pushing mechanism, and therefore the assembly efficiency of the pipe bodies and the heat exchange fins is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of finned heat exchanger tube assembly technology, specifically a novel modular tooling for fin assembly of externally welded finned heat exchanger tubes. Background Technology

[0002] The structure of the externally welded finned heat exchanger tube is as follows: Figure 1 , Figure 2 As shown, the tube includes a tube body 1, with heat exchange fins 2 welded to its outer wall using brazing filler metal. The traditional manufacturing process involves assembling the heat exchange fins 2 one by one onto the outer wall of the tube body 1, then applying brazing filler metal, and finally brazing. Externally welded finned heat exchange tubes can essentially ensure 100% contact between the heat exchange fins 2 and the tube body 1, achieving high heat transfer efficiency, which is higher than traditional expanded finned heat exchange tubes and wound finned heat exchange tubes. However, the traditional manufacturing method of externally welded fins is relatively inefficient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new type of modular tooling for fin assembly of externally welded finned heat exchange tubes, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses a novel modular tooling for assembling externally welded finned heat exchange tubes. The technical solution includes a base plate on which tooling modules are mounted. Two tooling modules are mounted on the base plate, arranged opposite each other. Each tooling module includes multiple tooling modules. Each tooling module has a groove on its plate. When the two tooling modules are assembled, the grooves in the tooling modules of the two tooling modules can be aligned to accommodate... The heat exchange fins are pre-positioned in the slots by first installing them in the slots, facilitating subsequent pipe insertion. The tooling module also features bow-shaped, fan-shaped, or semi-circular perforations, coaxial with the slots, which are also bow-shaped, fan-shaped, or semi-circular. It also includes guide posts that pass through the perforations. The ends of the guide posts are connected to or slidably contact a pushing mechanism, which allows the pipe to be fitted onto the guide post. The pushing mechanism then pushes the guide post into the perforation, thereby fitting the heat exchange fins onto the pipe. The pushing mechanism can employ common linear displacement drive mechanisms such as hydraulic cylinders, pneumatic cylinders, electric cylinders, lead screw systems, and cams.

[0005] As a preferred technical solution of this utility model, the tooling module further includes a fixing bolt, a fixing hole is opened on the tooling module, the fixing bolt is in the fixing hole, and a nut is engaged on the fixing bolt. The tooling modules on the same tooling module can be locked by the fixing bolt and the nut.

[0006] As a preferred embodiment of this utility model, the base plate has a sliding rod, and a fixed plate is connected to the base plate and / or the sliding rod. One tooling module is mounted on the fixed plate, a sliding plate is slidably connected to the sliding rod, and another tooling module is mounted on the sliding plate.

[0007] As a preferred technical solution of this utility model, both the fixed plate and the sliding plate are provided with connecting holes. The connecting holes correspond to the fixed holes in position and match in size. The fixing bolt passes through the connecting holes and connects to the nut, so that the tooling module is installed on the fixed plate and the sliding plate, which facilitates the stability of the tooling module when the guide rod is inserted.

[0008] As a preferred embodiment of this utility model, the two ends of the sliding plate are connected to sliding sleeves, and the sliding sleeves are slidably connected to the sliding rod.

[0009] As a preferred technical solution of this utility model, the guide post includes a first column and a second column. One end of the first column is connected to a pressure plate, and the other end is detachably connected to the end face of the second column. The free end of the second column has a top point. The pressure plate has a pushing mechanism that can separate the first column and the second column, put the tube on the first column, and then connect the second column. The pressure plate can provide a larger force-bearing area, and the inclined surface of the top point is connected to the inner ring surface of the heat exchange fins to facilitate the insertion of the guide rod.

[0010] As a preferred embodiment of this utility model, the first column and the second column are connected by an external threaded connecting rod and a threaded hole.

[0011] As a preferred embodiment of this invention, the outer diameter of the tip is larger than the outer diameters of the first column and the second column.

[0012] Compared with existing technologies, the advantages of this invention are as follows: This invention assembles multiple tooling modules with recessed slots into a tooling module. The tooling module has through holes containing guide rods. The heat exchange fins are first inserted one by one into the recessed slots of the tooling module, and the tooling module positions the heat exchange fins. Then, the tube is fitted onto the guide rod, which guides the tube into the tube hole of the heat exchange fin. This invention prevents the heat exchange fins from moving or tipping over during assembly. Furthermore, with the assistance of a pushing mechanism, the tube can be quickly inserted into the tube opening of the heat exchange fin, thus significantly accelerating the assembly efficiency of the tube and heat exchange fins. Attached Figure Description

[0013] Figure 1 Schematic diagram of externally welded finned heat exchanger tube structure Figure 1 ;

[0014] Figure 2Schematic diagram of externally welded finned heat exchanger tube structure Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model (excluding the base frame);

[0016] Figure 4 This is a schematic diagram of the tooling module structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the guide post structure of this utility model. Figure 1 ;

[0018] Figure 6 This is a schematic diagram of the guide post structure of this utility model. Figure 2 ;

[0019] Figure 7 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Pipe body; 2. Heat exchange fins; 3. Guide post; 301. First post; 302. Second post; 303. Pressure plate; 304. Center point; 4. Tooling module; 401. Plate; 402. Slot; 403. Fixing hole; 404. Through hole; 5. Fixing bolt; 6. Nut; 7. Base plate; 8. Slide rod; 9. Fixing plate; 10. Sliding plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 7 As shown, this utility model discloses a novel modular tooling for assembling externally welded finned heat exchange tubes. The technical solution includes a base plate 7 and a tooling module. Two sliding rods 8 are vertically mounted on the base plate 7, and a fixing plate 9 is fixedly connected to the sliding rods 8. Connection holes are provided on the fixing plate 9. The tooling module includes multiple tooling modules 4, such as... Figure 4As shown, the plate 401 of the tooling module 4 is a semi-annular plate with a through hole 404 on its inner annular surface. The through hole 404 is a semi-circular hole on the plate 401. A semi-circular groove 402 is opened on the end face of the plate 401. The groove 402 matches the size of the heat exchange fins. The centers of the groove 402, the plate 401, and the through hole 404 are coaxial. A fixing hole 403 is also opened on the end face of the plate 401. The fixing hole 403 corresponds to the position and size of the connecting hole on the fixing plate 9. A fixing bolt 5 is passed through the fixing holes 403 of all tooling modules 4 in a set of tooling modules 4 and through the connecting hole. A nut 6 is screwed onto the fixing bolt 5 on the side of the fixing plate 9 away from the tooling module to lock the tooling module onto the fixing plate 9.

[0023] A sliding plate 10 is also slidably connected to the slide rod 8, such as... Figure 7 As shown, the sliding plate 10 is located above the fixed plate 9, and C-shaped sliding sleeves are installed at both ends. The C-shaped sliding sleeves are slidably connected to the sliding rod 8. The sliding plate 10 also has connection holes, and another set of tooling modules is installed on the sliding plate 10. The tooling modules on the sliding plate 10 are arranged opposite to the tooling modules on the fixed plate 9.

[0024] It also includes guide post 3, such as Figure 5 , Figure 6 As shown, the guide post 3 includes a first post 301 and a second post 302. One end of the first post 301 has a pressure plate 303, and the other end has a coaxially arranged externally threaded connecting rod. The pressure plate 303 is a circular plate. One end of the second post 302 is connected to a center 304, and the other end has a coaxially arranged threaded hole. The threaded hole and the externally threaded connecting rod are positioned and matched in size, allowing them to mesh. The outer diameter of the first post 301 and the second post 302 matches the inner diameter of the tube 1, allowing the tube 1 to fit snugly onto the first post 301 and the second post 302. The outer diameter of the center 304 matches the outer diameter of the tube 1, and the inclined surface of the center 304 transitions towards the outer wall of the tube 1.

[0025] A hydraulic cylinder (not shown in the figure) is also installed on the base plate 7. The telescopic end of the hydraulic cylinder slides in contact with the end face of the pressure plate 303, and the telescopic end of the hydraulic cylinder is coaxial with the guide post 3.

[0026] The working principle of this utility model:

[0027] Loosen nut 6 to increase the gap between tooling modules 4, and insert the heat exchange fin 2 to be assembled into the recess 402 of tooling module 4 mounted on fixed plate 9. The lower half of heat exchange fin 2 should be completely submerged in the recess 402, with the recess 402 of tooling module 4 on fixed plate 9 facing upwards. Slide sliding plate 10 downwards so that tooling module 4 on sliding plate 10 is fastened onto tooling module 4 on fixed plate 9, so that the upper half of heat exchange fin 2 is completely submerged in the recess 402 of tooling module 4 on sliding plate 10. This ensures that the upper and lower tooling modules 4 completely cover heat exchange fin 2. Tighten nut 6 to lock and press heat exchange fin 2 firmly to prevent it from shaking.

[0028] Tighten the second column 302 of the guide post 3 to separate the threaded hole from the external threaded connecting rod, thereby separating the first column 301 and the second column 302. Put the tube 1 on the first column 301, with the end face of the tube 1 in contact with the end face of the pressure plate 303. Insert the second column 303 into the tube 1 from the end away from the pressure plate 303, and screw the external threaded connecting rod into the threaded hole, thereby mounting the tube 1 on the guide post 3. The bottom edge of the tip 304 is connected to the end edge of the tube 1.

[0029] The hydraulic cylinder's extension end face presses against the pressure plate 303, and the hydraulic system is activated to extend the cylinder. The guide post 3, containing the tube body 1, is inserted into the opening of the heat exchange fin 2 in the tooling module, with the insertion direction aligned with the extension direction of the heat exchange fin 2's opening. Guided by the inclined surface of the tip 304, the tube body 1 can smoothly enter the opening of the heat exchange fin 2. After assembly, the hydraulic system is operated to retract the hydraulic cylinder, loosen and release the nut 6, further increasing the distance between the tooling modules 4. The sliding plate 10 is then moved upwards, and the preliminarily assembled externally welded finned heat exchange tube is removed.

[0030] Apply brazing filler to the joint between tube 1 and heat exchange fins 2 and braze to complete the assembly.

[0031] The mechanical connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0032] Components not described in detail in this article are existing technologies.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel modular tooling for assembling and combining fins of an externally welded finned heat exchanger tube, comprising a base plate (7), wherein a tooling module (4) is mounted on the base plate (7), characterized in that: The base plate (7) is equipped with a tooling module. There are two tooling modules, which are arranged opposite to each other. Each tooling module includes multiple tooling modules (4). The tooling modules (4) have a groove (402). When the two tooling modules are assembled, the grooves (402) of the tooling modules (4) of the two tooling modules can be connected to form a slot for accommodating the fins. The tooling modules (4) also have a through hole (404) coaxial with the groove (402). The base plate (7) also includes a guide post (3). The guide post (3) passes through the through hole (404). The end of the guide post (3) is connected to or slides in contact with a pushing mechanism.

2. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 1, characterized in that: The tooling module also includes a fixing bolt (5), and a fixing hole (403) is opened on the tooling module (4). The fixing bolt (5) is located in the fixing hole (403), and a nut (6) is engaged on the fixing bolt (5).

3. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 2, characterized in that: The base plate (7) has a slide rod (8), and a fixed plate (9) is connected to the base plate (7) and / or the slide rod (8). One tooling module is installed on the fixed plate (9), and a sliding plate (10) is slidably connected to the slide rod (8). Another tooling module is installed on the sliding plate (10).

4. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 3, characterized in that: Both the fixed plate (9) and the sliding plate (10) are provided with connecting holes. The connecting holes correspond to the fixed holes (403) in position and match in size. The fixing bolt (5) passes through the connecting holes and is then connected to the nut (6).

5. The modular tooling for assembling and combining the fins of the novel externally welded finned heat exchanger tube according to claim 3 or 4, characterized in that: The sliding plate (10) is connected to two sliding sleeves at both ends, and the sliding sleeves are slidably connected to the sliding rod (8).

6. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 1, characterized in that: The guide post (3) includes a first post (301) and a second post (302). One end of the first post (301) is connected to a pressure plate (303), and the other end is detachably connected to the end face of the second post (302). The free end of the second post (302) has a tip (304). The pressure plate (303) slides in contact with a pushing mechanism.

7. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 6, characterized in that: The first column (301) and the second column (302) are connected by an external threaded connecting rod and a threaded hole.

8. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 6 or 7, characterized in that: The outer diameter of the tip (304) is greater than the outer diameters of the first column (301) and the second column (302).

9. The modular tooling for fin assembly of the novel externally welded finned heat exchanger tube according to claim 1, characterized in that: The perforation (404) is an arc-shaped, fan-shaped, or semi-circular hole.

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